This project explores the meaning of social justice in an age of datafication. It is premised on two significant developments: 1) the shift to a focus on the collection and processing of massive amounts of data across social life and 2) the increasing concern with the societal implications of such processes. Whilst initial concern with the technical ability to ‘datafy’ and collect information on ever-more social activity focused on surveillance and privacy, increasing emphasis is being placed on the fact that data processes are not ‘flat’ and do not implicate everyone in the same way, but, rather, are part of a system of ‘social sorting’, creating new categories of citizens, and premised on an emerging order of ‘have’ and ‘have nots’ between data profilers and data subjects. In such a context, questions of social justice and datafication require detailed study. This project frames this research agenda around the notion of ‘data justice’.